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Finding the Fourth Proportional to 770,652.80, 1,154,510.40 and 415,548.80

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Solution

The fourth proportional to 770,652.80, 1,154,510.40 and 415,548.80 is: 622,531.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,652.80 : 1,154,510.40 = 415,548.80 : x
  2. Step 2: Convert to fraction form
    770,652.80/1,154,510.40 = 415,548.80/x
  3. Step 3: Cross multiply
    770,652.80x = 1,154,510.40 × 415,548.80
  4. Step 4: Simplify right side
    770,652.80x = 479,755,411,307.52
  5. Step 5: Solve for x
    x = 479,755,411,307.52/770,652.80
  6. Step 6: Final answer
    x = 622,531.20

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Double scale
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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.