Home / 1,242,442.12-1,710,338.88-919,543.72

Finding the Fourth Proportional to 1,242,442.12, 1,710,338.88 and 919,543.72

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Solution

The fourth proportional to 1,242,442.12, 1,710,338.88 and 919,543.72 is: 1,265,838.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242,442.12 : 1,710,338.88 = 919,543.72 : x
  2. Step 2: Convert to fraction form
    1,242,442.12/1,710,338.88 = 919,543.72/x
  3. Step 3: Cross multiply
    1,242,442.12x = 1,710,338.88 × 919,543.72
  4. Step 4: Simplify right side
    1,242,442.12x = 1,572,731,376,175.83
  5. Step 5: Solve for x
    x = 1,572,731,376,175.83/1,242,442.12
  6. Step 6: Final answer
    x = 1,265,838.75

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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.