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Finding the Fourth Proportional to 510,815.10, 766,222.65 and 455,702.70

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Solution

The fourth proportional to 510,815.10, 766,222.65 and 455,702.70 is: 683,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    510,815.10 : 766,222.65 = 455,702.70 : x
  2. Step 2: Convert to fraction form
    510,815.10/766,222.65 = 455,702.70/x
  3. Step 3: Cross multiply
    510,815.10x = 766,222.65 × 455,702.70
  4. Step 4: Simplify right side
    510,815.10x = 349,169,730,406.16
  5. Step 5: Solve for x
    x = 349,169,730,406.16/510,815.10
  6. Step 6: Final answer
    x = 683,554.05

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Similar ratio
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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.