Home / 717,812.20-1,075,422.30-418,047.40

Finding the Fourth Proportional to 717,812.20, 1,075,422.30 and 418,047.40

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Solution

The fourth proportional to 717,812.20, 1,075,422.30 and 418,047.40 is: 626,316.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,812.20 : 1,075,422.30 = 418,047.40 : x
  2. Step 2: Convert to fraction form
    717,812.20/1,075,422.30 = 418,047.40/x
  3. Step 3: Cross multiply
    717,812.20x = 1,075,422.30 × 418,047.40
  4. Step 4: Simplify right side
    717,812.20x = 449,577,496,417.02
  5. Step 5: Solve for x
    x = 449,577,496,417.02/717,812.20
  6. Step 6: Final answer
    x = 626,316.32

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1.5x scale

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.