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Finding the Fourth Proportional to 708,041.20, 978,339.72 and 565,973.68

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Solution

The fourth proportional to 708,041.20, 978,339.72 and 565,973.68 is: 782,037.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,041.20 : 978,339.72 = 565,973.68 : x
  2. Step 2: Convert to fraction form
    708,041.20/978,339.72 = 565,973.68/x
  3. Step 3: Cross multiply
    708,041.20x = 978,339.72 × 565,973.68
  4. Step 4: Simplify right side
    708,041.20x = 553,714,531,618.57
  5. Step 5: Solve for x
    x = 553,714,531,618.57/708,041.20
  6. Step 6: Final answer
    x = 782,037.16

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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.