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Finding the Fourth Proportional to 873,522.45, 1,205,460.45 and 491,549.58

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Solution

The fourth proportional to 873,522.45, 1,205,460.45 and 491,549.58 is: 678,338.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,522.45 : 1,205,460.45 = 491,549.58 : x
  2. Step 2: Convert to fraction form
    873,522.45/1,205,460.45 = 491,549.58/x
  3. Step 3: Cross multiply
    873,522.45x = 1,205,460.45 × 491,549.58
  4. Step 4: Simplify right side
    873,522.45x = 592,543,577,904.11
  5. Step 5: Solve for x
    x = 592,543,577,904.11/873,522.45
  6. Step 6: Final answer
    x = 678,338.12

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.