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Finding the Fourth Proportional to 912,060, 1,368,271.44 and 280,946.88

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Solution

The fourth proportional to 912,060, 1,368,271.44 and 280,946.88 is: 421,476.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,060 : 1,368,271.44 = 280,946.88 : x
  2. Step 2: Convert to fraction form
    912,060/1,368,271.44 = 280,946.88/x
  3. Step 3: Cross multiply
    912,060x = 1,368,271.44 × 280,946.88
  4. Step 4: Simplify right side
    912,060x = 384,411,592,061.11
  5. Step 5: Solve for x
    x = 384,411,592,061.11/912,060
  6. Step 6: Final answer
    x = 421,476.21

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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.