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Finding the Fourth Proportional to 710,619.63, 980,613.45 and 388,332.24

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Solution

The fourth proportional to 710,619.63, 980,613.45 and 388,332.24 is: 535,875.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,619.63 : 980,613.45 = 388,332.24 : x
  2. Step 2: Convert to fraction form
    710,619.63/980,613.45 = 388,332.24/x
  3. Step 3: Cross multiply
    710,619.63x = 980,613.45 × 388,332.24
  4. Step 4: Simplify right side
    710,619.63x = 380,803,817,612.63
  5. Step 5: Solve for x
    x = 380,803,817,612.63/710,619.63
  6. Step 6: Final answer
    x = 535,875.74

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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.