Home / 918,885.79-1,267,876.57-536,838.76

Finding the Fourth Proportional to 918,885.79, 1,267,876.57 and 536,838.76

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Solution

The fourth proportional to 918,885.79, 1,267,876.57 and 536,838.76 is: 740,728.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,885.79 : 1,267,876.57 = 536,838.76 : x
  2. Step 2: Convert to fraction form
    918,885.79/1,267,876.57 = 536,838.76/x
  3. Step 3: Cross multiply
    918,885.79x = 1,267,876.57 × 536,838.76
  4. Step 4: Simplify right side
    918,885.79x = 680,645,285,671.85
  5. Step 5: Solve for x
    x = 680,645,285,671.85/918,885.79
  6. Step 6: Final answer
    x = 740,728.93

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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.