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Finding the Fourth Proportional to 708,661.40, 978,886.24 and 525,271.74

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Solution

The fourth proportional to 708,661.40, 978,886.24 and 525,271.74 is: 725,566.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,661.40 : 978,886.24 = 525,271.74 : x
  2. Step 2: Convert to fraction form
    708,661.40/978,886.24 = 525,271.74/x
  3. Step 3: Cross multiply
    708,661.40x = 978,886.24 × 525,271.74
  4. Step 4: Simplify right side
    708,661.40x = 514,181,278,546.86
  5. Step 5: Solve for x
    x = 514,181,278,546.86/708,661.40
  6. Step 6: Final answer
    x = 725,566.93

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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.