Home / 724,689.92-1,000,038.66-402,420.44

Finding the Fourth Proportional to 724,689.92, 1,000,038.66 and 402,420.44

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Solution

The fourth proportional to 724,689.92, 1,000,038.66 and 402,420.44 is: 555,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,689.92 : 1,000,038.66 = 402,420.44 : x
  2. Step 2: Convert to fraction form
    724,689.92/1,000,038.66 = 402,420.44/x
  3. Step 3: Cross multiply
    724,689.92x = 1,000,038.66 × 402,420.44
  4. Step 4: Simplify right side
    724,689.92x = 402,435,997,574.21
  5. Step 5: Solve for x
    x = 402,435,997,574.21/724,689.92
  6. Step 6: Final answer
    x = 555,321.64

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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.