Home / 727,412.38-1,003,829.38-421,666.10

Finding the Fourth Proportional to 727,412.38, 1,003,829.38 and 421,666.10

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Solution

The fourth proportional to 727,412.38, 1,003,829.38 and 421,666.10 is: 581,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,412.38 : 1,003,829.38 = 421,666.10 : x
  2. Step 2: Convert to fraction form
    727,412.38/1,003,829.38 = 421,666.10/x
  3. Step 3: Cross multiply
    727,412.38x = 1,003,829.38 × 421,666.10
  4. Step 4: Simplify right side
    727,412.38x = 423,280,819,730.02
  5. Step 5: Solve for x
    x = 423,280,819,730.02/727,412.38
  6. Step 6: Final answer
    x = 581,899.39

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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.