Home / 762,718.40-1,144,077.60-621,000.80

Finding the Fourth Proportional to 762,718.40, 1,144,077.60 and 621,000.80

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Solution

The fourth proportional to 762,718.40, 1,144,077.60 and 621,000.80 is: 931,501.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,718.40 : 1,144,077.60 = 621,000.80 : x
  2. Step 2: Convert to fraction form
    762,718.40/1,144,077.60 = 621,000.80/x
  3. Step 3: Cross multiply
    762,718.40x = 1,144,077.60 × 621,000.80
  4. Step 4: Simplify right side
    762,718.40x = 710,473,104,862.08
  5. Step 5: Solve for x
    x = 710,473,104,862.08/762,718.40
  6. Step 6: Final answer
    x = 931,501.20

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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.