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Finding the Fourth Proportional to 879,145, 1,213,220.10 and 476,737.32

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Solution

The fourth proportional to 879,145, 1,213,220.10 and 476,737.32 is: 657,897.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,145 : 1,213,220.10 = 476,737.32 : x
  2. Step 2: Convert to fraction form
    879,145/1,213,220.10 = 476,737.32/x
  3. Step 3: Cross multiply
    879,145x = 1,213,220.10 × 476,737.32
  4. Step 4: Simplify right side
    879,145x = 578,387,299,044.13
  5. Step 5: Solve for x
    x = 578,387,299,044.13/879,145
  6. Step 6: Final answer
    x = 657,897.50

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1.5x scale

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.