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Finding the Fourth Proportional to 525,773.80, 788,660.70 and 510,221.80

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Solution

The fourth proportional to 525,773.80, 788,660.70 and 510,221.80 is: 765,332.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,773.80 : 788,660.70 = 510,221.80 : x
  2. Step 2: Convert to fraction form
    525,773.80/788,660.70 = 510,221.80/x
  3. Step 3: Cross multiply
    525,773.80x = 788,660.70 × 510,221.80
  4. Step 4: Simplify right side
    525,773.80x = 402,391,881,943.26
  5. Step 5: Solve for x
    x = 402,391,881,943.26/525,773.80
  6. Step 6: Final answer
    x = 765,332.70

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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.