Home / 991,317.60-1,486,140.48-429,929.28

Finding the Fourth Proportional to 991,317.60, 1,486,140.48 and 429,929.28

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Solution

The fourth proportional to 991,317.60, 1,486,140.48 and 429,929.28 is: 644,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,317.60 : 1,486,140.48 = 429,929.28 : x
  2. Step 2: Convert to fraction form
    991,317.60/1,486,140.48 = 429,929.28/x
  3. Step 3: Cross multiply
    991,317.60x = 1,486,140.48 × 429,929.28
  4. Step 4: Simplify right side
    991,317.60x = 638,935,306,545.25
  5. Step 5: Solve for x
    x = 638,935,306,545.25/991,317.60
  6. Step 6: Final answer
    x = 644,531.39

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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.