Home / 742,178.50-1,024,208.32-402,646.76

Finding the Fourth Proportional to 742,178.50, 1,024,208.32 and 402,646.76

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Solution

The fourth proportional to 742,178.50, 1,024,208.32 and 402,646.76 is: 555,653.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,178.50 : 1,024,208.32 = 402,646.76 : x
  2. Step 2: Convert to fraction form
    742,178.50/1,024,208.32 = 402,646.76/x
  3. Step 3: Cross multiply
    742,178.50x = 1,024,208.32 × 402,646.76
  4. Step 4: Simplify right side
    742,178.50x = 412,394,161,613.04
  5. Step 5: Solve for x
    x = 412,394,161,613.04/742,178.50
  6. Step 6: Final answer
    x = 555,653.61

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Double scale
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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.