Home / 872,547.40-1,308,821.10-860,105.80

Finding the Fourth Proportional to 872,547.40, 1,308,821.10 and 860,105.80

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Solution

The fourth proportional to 872,547.40, 1,308,821.10 and 860,105.80 is: 1,290,158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,547.40 : 1,308,821.10 = 860,105.80 : x
  2. Step 2: Convert to fraction form
    872,547.40/1,308,821.10 = 860,105.80/x
  3. Step 3: Cross multiply
    872,547.40x = 1,308,821.10 × 860,105.80
  4. Step 4: Simplify right side
    872,547.40x = 1,125,724,619,272.38
  5. Step 5: Solve for x
    x = 1,125,724,619,272.38/872,547.40
  6. Step 6: Final answer
    x = 1,290,158.70

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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.