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Finding the Fourth Proportional to 887,709, 1,225,038.42 and 485,301

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Solution

The fourth proportional to 887,709, 1,225,038.42 and 485,301 is: 669,715.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,709 : 1,225,038.42 = 485,301 : x
  2. Step 2: Convert to fraction form
    887,709/1,225,038.42 = 485,301/x
  3. Step 3: Cross multiply
    887,709x = 1,225,038.42 × 485,301
  4. Step 4: Simplify right side
    887,709x = 594,512,370,264.42
  5. Step 5: Solve for x
    x = 594,512,370,264.42/887,709
  6. Step 6: Final answer
    x = 669,715.38

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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.