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Finding the Fourth Proportional to 607,636.80, 908,830.80 and 513,158.40

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Solution

The fourth proportional to 607,636.80, 908,830.80 and 513,158.40 is: 767,521.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,636.80 : 908,830.80 = 513,158.40 : x
  2. Step 2: Convert to fraction form
    607,636.80/908,830.80 = 513,158.40/x
  3. Step 3: Cross multiply
    607,636.80x = 908,830.80 × 513,158.40
  4. Step 4: Simplify right side
    607,636.80x = 466,374,159,198.72
  5. Step 5: Solve for x
    x = 466,374,159,198.72/607,636.80
  6. Step 6: Final answer
    x = 767,521.25

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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.