Home / 717,811.20-1,075,420.80-418,046.40

Finding the Fourth Proportional to 717,811.20, 1,075,420.80 and 418,046.40

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Solution

The fourth proportional to 717,811.20, 1,075,420.80 and 418,046.40 is: 626,314.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,811.20 : 1,075,420.80 = 418,046.40 : x
  2. Step 2: Convert to fraction form
    717,811.20/1,075,420.80 = 418,046.40/x
  3. Step 3: Cross multiply
    717,811.20x = 1,075,420.80 × 418,046.40
  4. Step 4: Simplify right side
    717,811.20x = 449,575,793,925.12
  5. Step 5: Solve for x
    x = 449,575,793,925.12/717,811.20
  6. Step 6: Final answer
    x = 626,314.82

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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.