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Finding the Fourth Proportional to 617,931.76, 852,547.56 and 345,959.60

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Solution

The fourth proportional to 617,931.76, 852,547.56 and 345,959.60 is: 477,313.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,931.76 : 852,547.56 = 345,959.60 : x
  2. Step 2: Convert to fraction form
    617,931.76/852,547.56 = 345,959.60/x
  3. Step 3: Cross multiply
    617,931.76x = 852,547.56 × 345,959.60
  4. Step 4: Simplify right side
    617,931.76x = 294,947,012,838.58
  5. Step 5: Solve for x
    x = 294,947,012,838.58/617,931.76
  6. Step 6: Final answer
    x = 477,313.24

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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.