Home / 877,445.20-1,315,260.60-477,240.40

Finding the Fourth Proportional to 877,445.20, 1,315,260.60 and 477,240.40

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Solution

The fourth proportional to 877,445.20, 1,315,260.60 and 477,240.40 is: 715,367.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,445.20 : 1,315,260.60 = 477,240.40 : x
  2. Step 2: Convert to fraction form
    877,445.20/1,315,260.60 = 477,240.40/x
  3. Step 3: Cross multiply
    877,445.20x = 1,315,260.60 × 477,240.40
  4. Step 4: Simplify right side
    877,445.20x = 627,695,494,848.24
  5. Step 5: Solve for x
    x = 627,695,494,848.24/877,445.20
  6. Step 6: Final answer
    x = 715,367.18

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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.