Home / 910,355.40-1,256,200.79-502,479.90

Finding the Fourth Proportional to 910,355.40, 1,256,200.79 and 502,479.90

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Solution

The fourth proportional to 910,355.40, 1,256,200.79 and 502,479.90 is: 693,372.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,355.40 : 1,256,200.79 = 502,479.90 : x
  2. Step 2: Convert to fraction form
    910,355.40/1,256,200.79 = 502,479.90/x
  3. Step 3: Cross multiply
    910,355.40x = 1,256,200.79 × 502,479.90
  4. Step 4: Simplify right side
    910,355.40x = 631,215,644,826.72
  5. Step 5: Solve for x
    x = 631,215,644,826.72/910,355.40
  6. Step 6: Final answer
    x = 693,372.77

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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.