Home / 938,575.26-1,408,281.54-432,864.78

Finding the Fourth Proportional to 938,575.26, 1,408,281.54 and 432,864.78

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Solution

The fourth proportional to 938,575.26, 1,408,281.54 and 432,864.78 is: 649,490.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,575.26 : 1,408,281.54 = 432,864.78 : x
  2. Step 2: Convert to fraction form
    938,575.26/1,408,281.54 = 432,864.78/x
  3. Step 3: Cross multiply
    938,575.26x = 1,408,281.54 × 432,864.78
  4. Step 4: Simplify right side
    938,575.26x = 609,595,478,990.16
  5. Step 5: Solve for x
    x = 609,595,478,990.16/938,575.26
  6. Step 6: Final answer
    x = 649,490.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.