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Finding the Fourth Proportional to 536,870.55, 740,886.18 and 291,855.78

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Solution

The fourth proportional to 536,870.55, 740,886.18 and 291,855.78 is: 402,763.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,870.55 : 740,886.18 = 291,855.78 : x
  2. Step 2: Convert to fraction form
    536,870.55/740,886.18 = 291,855.78/x
  3. Step 3: Cross multiply
    536,870.55x = 740,886.18 × 291,855.78
  4. Step 4: Simplify right side
    536,870.55x = 216,231,913,955.12
  5. Step 5: Solve for x
    x = 216,231,913,955.12/536,870.55
  6. Step 6: Final answer
    x = 402,763.60

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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.