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Finding the Fourth Proportional to 525,276.90, 787,915.35 and 525,276.90

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Solution

The fourth proportional to 525,276.90, 787,915.35 and 525,276.90 is: 787,915.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,276.90 : 787,915.35 = 525,276.90 : x
  2. Step 2: Convert to fraction form
    525,276.90/787,915.35 = 525,276.90/x
  3. Step 3: Cross multiply
    525,276.90x = 787,915.35 × 525,276.90
  4. Step 4: Simplify right side
    525,276.90x = 413,873,732,510.42
  5. Step 5: Solve for x
    x = 413,873,732,510.42/525,276.90
  6. Step 6: Final answer
    x = 787,915.35

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Double scale
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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.