Home / 918,712.62-1,267,816.77-510,811.31

Finding the Fourth Proportional to 918,712.62, 1,267,816.77 and 510,811.31

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Solution

The fourth proportional to 918,712.62, 1,267,816.77 and 510,811.31 is: 704,915.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,712.62 : 1,267,816.77 = 510,811.31 : x
  2. Step 2: Convert to fraction form
    918,712.62/1,267,816.77 = 510,811.31/x
  3. Step 3: Cross multiply
    918,712.62x = 1,267,816.77 × 510,811.31
  4. Step 4: Simplify right side
    918,712.62x = 647,615,145,123.67
  5. Step 5: Solve for x
    x = 647,615,145,123.67/918,712.62
  6. Step 6: Final answer
    x = 704,915.91

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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.