Home / 1,091,381.76-1,637,061.12-426,528

Finding the Fourth Proportional to 1,091,381.76, 1,637,061.12 and 426,528

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Solution

The fourth proportional to 1,091,381.76, 1,637,061.12 and 426,528 is: 639,787.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,381.76 : 1,637,061.12 = 426,528 : x
  2. Step 2: Convert to fraction form
    1,091,381.76/1,637,061.12 = 426,528/x
  3. Step 3: Cross multiply
    1,091,381.76x = 1,637,061.12 × 426,528
  4. Step 4: Simplify right side
    1,091,381.76x = 698,252,405,391.36
  5. Step 5: Solve for x
    x = 698,252,405,391.36/1,091,381.76
  6. Step 6: Final answer
    x = 639,787.50

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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.