Home / 742,172.91-1,024,200.59-402,641.16

Finding the Fourth Proportional to 742,172.91, 1,024,200.59 and 402,641.16

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Solution

The fourth proportional to 742,172.91, 1,024,200.59 and 402,641.16 is: 555,645.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    742,172.91 : 1,024,200.59 = 402,641.16 : x
  2. Step 2: Convert to fraction form
    742,172.91/1,024,200.59 = 402,641.16/x
  3. Step 3: Cross multiply
    742,172.91x = 1,024,200.59 × 402,641.16
  4. Step 4: Simplify right side
    742,172.91x = 412,385,314,636.89
  5. Step 5: Solve for x
    x = 412,385,314,636.89/742,172.91
  6. Step 6: Final answer
    x = 555,645.87

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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.