Home / 876,355.20-1,315,051.20-315,316.80

Finding the Fourth Proportional to 876,355.20, 1,315,051.20 and 315,316.80

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Solution

The fourth proportional to 876,355.20, 1,315,051.20 and 315,316.80 is: 473,161.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,355.20 : 1,315,051.20 = 315,316.80 : x
  2. Step 2: Convert to fraction form
    876,355.20/1,315,051.20 = 315,316.80/x
  3. Step 3: Cross multiply
    876,355.20x = 1,315,051.20 × 315,316.80
  4. Step 4: Simplify right side
    876,355.20x = 414,657,736,220.16
  5. Step 5: Solve for x
    x = 414,657,736,220.16/876,355.20
  6. Step 6: Final answer
    x = 473,161.72

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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.