Home / 1,155,715.60-1,731,823.80-781,301.20

Finding the Fourth Proportional to 1,155,715.60, 1,731,823.80 and 781,301.20

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Solution

The fourth proportional to 1,155,715.60, 1,731,823.80 and 781,301.20 is: 1,170,769.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,155,715.60 : 1,731,823.80 = 781,301.20 : x
  2. Step 2: Convert to fraction form
    1,155,715.60/1,731,823.80 = 781,301.20/x
  3. Step 3: Cross multiply
    1,155,715.60x = 1,731,823.80 × 781,301.20
  4. Step 4: Simplify right side
    1,155,715.60x = 1,353,076,013,128.56
  5. Step 5: Solve for x
    x = 1,353,076,013,128.56/1,155,715.60
  6. Step 6: Final answer
    x = 1,170,769.01

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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.