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Finding the Fourth Proportional to 578,082.30, 867,123.45 and 246,306.30

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Solution

The fourth proportional to 578,082.30, 867,123.45 and 246,306.30 is: 369,459.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,082.30 : 867,123.45 = 246,306.30 : x
  2. Step 2: Convert to fraction form
    578,082.30/867,123.45 = 246,306.30/x
  3. Step 3: Cross multiply
    578,082.30x = 867,123.45 × 246,306.30
  4. Step 4: Simplify right side
    578,082.30x = 213,577,968,612.74
  5. Step 5: Solve for x
    x = 213,577,968,612.74/578,082.30
  6. Step 6: Final answer
    x = 369,459.45

Related Problems

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Half scale
Find fourth proportional to 1,156,164.60, 1,734,246.90 and 492,612.60
Double scale
Find fourth proportional to 578,083.30, 867,124.95 and 246,307.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.