Home / 910,123.20-1,255,961.70-502,228.80

Finding the Fourth Proportional to 910,123.20, 1,255,961.70 and 502,228.80

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Solution

The fourth proportional to 910,123.20, 1,255,961.70 and 502,228.80 is: 693,071.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,123.20 : 1,255,961.70 = 502,228.80 : x
  2. Step 2: Convert to fraction form
    910,123.20/1,255,961.70 = 502,228.80/x
  3. Step 3: Cross multiply
    910,123.20x = 1,255,961.70 × 502,228.80
  4. Step 4: Simplify right side
    910,123.20x = 630,780,137,436.96
  5. Step 5: Solve for x
    x = 630,780,137,436.96/910,123.20
  6. Step 6: Final answer
    x = 693,071.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.