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Finding the Fourth Proportional to 710,153.46, 980,043.57 and 387,866.16

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Solution

The fourth proportional to 710,153.46, 980,043.57 and 387,866.16 is: 535,272.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,153.46 : 980,043.57 = 387,866.16 : x
  2. Step 2: Convert to fraction form
    710,153.46/980,043.57 = 387,866.16/x
  3. Step 3: Cross multiply
    710,153.46x = 980,043.57 × 387,866.16
  4. Step 4: Simplify right side
    710,153.46x = 380,125,736,128.59
  5. Step 5: Solve for x
    x = 380,125,736,128.59/710,153.46
  6. Step 6: Final answer
    x = 535,272.67

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1.5x scale

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.