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Finding the Fourth Proportional to 879,647.80, 1,319,471.70 and 525,062.20

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Solution

The fourth proportional to 879,647.80, 1,319,471.70 and 525,062.20 is: 787,593.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,647.80 : 1,319,471.70 = 525,062.20 : x
  2. Step 2: Convert to fraction form
    879,647.80/1,319,471.70 = 525,062.20/x
  3. Step 3: Cross multiply
    879,647.80x = 1,319,471.70 × 525,062.20
  4. Step 4: Simplify right side
    879,647.80x = 692,804,713,639.74
  5. Step 5: Solve for x
    x = 692,804,713,639.74/879,647.80
  6. Step 6: Final answer
    x = 787,593.30

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Double scale
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Similar ratio
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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.