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Finding the Fourth Proportional to 708,055.20, 978,359.04 and 565,987.68

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Solution

The fourth proportional to 708,055.20, 978,359.04 and 565,987.68 is: 782,056.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,055.20 : 978,359.04 = 565,987.68 : x
  2. Step 2: Convert to fraction form
    708,055.20/978,359.04 = 565,987.68/x
  3. Step 3: Cross multiply
    708,055.20x = 978,359.04 × 565,987.68
  4. Step 4: Simplify right side
    708,055.20x = 553,739,163,256.63
  5. Step 5: Solve for x
    x = 553,739,163,256.63/708,055.20
  6. Step 6: Final answer
    x = 782,056.49

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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.