Home / 912,391.52-1,259,060.64-498,920.64

Finding the Fourth Proportional to 912,391.52, 1,259,060.64 and 498,920.64

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Solution

The fourth proportional to 912,391.52, 1,259,060.64 and 498,920.64 is: 688,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,391.52 : 1,259,060.64 = 498,920.64 : x
  2. Step 2: Convert to fraction form
    912,391.52/1,259,060.64 = 498,920.64/x
  3. Step 3: Cross multiply
    912,391.52x = 1,259,060.64 × 498,920.64
  4. Step 4: Simplify right side
    912,391.52x = 628,171,340,307.61
  5. Step 5: Solve for x
    x = 628,171,340,307.61/912,391.52
  6. Step 6: Final answer
    x = 688,488.80

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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.