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Finding the Fourth Proportional to 867,549.76, 1,197,206.88 and 485,576.48

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Solution

The fourth proportional to 867,549.76, 1,197,206.88 and 485,576.48 is: 670,088.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,549.76 : 1,197,206.88 = 485,576.48 : x
  2. Step 2: Convert to fraction form
    867,549.76/1,197,206.88 = 485,576.48/x
  3. Step 3: Cross multiply
    867,549.76x = 1,197,206.88 × 485,576.48
  4. Step 4: Simplify right side
    867,549.76x = 581,335,502,622.18
  5. Step 5: Solve for x
    x = 581,335,502,622.18/867,549.76
  6. Step 6: Final answer
    x = 670,088.94

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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.