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Finding the Fourth Proportional to 876,366.72, 1,209,386.88 and 473,958.72

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Solution

The fourth proportional to 876,366.72, 1,209,386.88 and 473,958.72 is: 654,063.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,366.72 : 1,209,386.88 = 473,958.72 : x
  2. Step 2: Convert to fraction form
    876,366.72/1,209,386.88 = 473,958.72/x
  3. Step 3: Cross multiply
    876,366.72x = 1,209,386.88 × 473,958.72
  4. Step 4: Simplify right side
    876,366.72x = 573,199,457,629.59
  5. Step 5: Solve for x
    x = 573,199,457,629.59/876,366.72
  6. Step 6: Final answer
    x = 654,063.47

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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.