Home / 830,030.10-1,245,045.15-578,087.70

Finding the Fourth Proportional to 830,030.10, 1,245,045.15 and 578,087.70

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Solution

The fourth proportional to 830,030.10, 1,245,045.15 and 578,087.70 is: 867,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,030.10 : 1,245,045.15 = 578,087.70 : x
  2. Step 2: Convert to fraction form
    830,030.10/1,245,045.15 = 578,087.70/x
  3. Step 3: Cross multiply
    830,030.10x = 1,245,045.15 × 578,087.70
  4. Step 4: Simplify right side
    830,030.10x = 719,745,287,159.66
  5. Step 5: Solve for x
    x = 719,745,287,159.66/830,030.10
  6. Step 6: Final answer
    x = 867,131.55

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Double scale
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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.