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Finding the Fourth Proportional to 656,307.60, 921,630 and 656,307.60

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Solution

The fourth proportional to 656,307.60, 921,630 and 656,307.60 is: 921,630

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,307.60 : 921,630 = 656,307.60 : x
  2. Step 2: Convert to fraction form
    656,307.60/921,630 = 656,307.60/x
  3. Step 3: Cross multiply
    656,307.60x = 921,630 × 656,307.60
  4. Step 4: Simplify right side
    656,307.60x = 604,872,773,388
  5. Step 5: Solve for x
    x = 604,872,773,388/656,307.60
  6. Step 6: Final answer
    x = 921,630

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.