Home / 430,193.08-642,123.05-374,426.20

Finding the Fourth Proportional to 430,193.08, 642,123.05 and 374,426.20

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Solution

The fourth proportional to 430,193.08, 642,123.05 and 374,426.20 is: 558,883.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,193.08 : 642,123.05 = 374,426.20 : x
  2. Step 2: Convert to fraction form
    430,193.08/642,123.05 = 374,426.20/x
  3. Step 3: Cross multiply
    430,193.08x = 642,123.05 × 374,426.20
  4. Step 4: Simplify right side
    430,193.08x = 240,427,693,543.91
  5. Step 5: Solve for x
    x = 240,427,693,543.91/430,193.08
  6. Step 6: Final answer
    x = 558,883.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.