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Finding the Fourth Proportional to 525,555.80, 788,333.70 and 485,005.40

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Solution

The fourth proportional to 525,555.80, 788,333.70 and 485,005.40 is: 727,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,555.80 : 788,333.70 = 485,005.40 : x
  2. Step 2: Convert to fraction form
    525,555.80/788,333.70 = 485,005.40/x
  3. Step 3: Cross multiply
    525,555.80x = 788,333.70 × 485,005.40
  4. Step 4: Simplify right side
    525,555.80x = 382,346,101,501.98
  5. Step 5: Solve for x
    x = 382,346,101,501.98/525,555.80
  6. Step 6: Final answer
    x = 727,508.10

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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.