Home / 1,072,289.20-1,480,091.28-690,316

Finding the Fourth Proportional to 1,072,289.20, 1,480,091.28 and 690,316

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Solution

The fourth proportional to 1,072,289.20, 1,480,091.28 and 690,316 is: 952,849.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,072,289.20 : 1,480,091.28 = 690,316 : x
  2. Step 2: Convert to fraction form
    1,072,289.20/1,480,091.28 = 690,316/x
  3. Step 3: Cross multiply
    1,072,289.20x = 1,480,091.28 × 690,316
  4. Step 4: Simplify right side
    1,072,289.20x = 1,021,730,692,044.48
  5. Step 5: Solve for x
    x = 1,021,730,692,044.48/1,072,289.20
  6. Step 6: Final answer
    x = 952,849.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.