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Finding the Fourth Proportional to 710,925.96, 981,075.60 and 388,636.32

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Solution

The fourth proportional to 710,925.96, 981,075.60 and 388,636.32 is: 536,316.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,925.96 : 981,075.60 = 388,636.32 : x
  2. Step 2: Convert to fraction form
    710,925.96/981,075.60 = 388,636.32/x
  3. Step 3: Cross multiply
    710,925.96x = 981,075.60 × 388,636.32
  4. Step 4: Simplify right side
    710,925.96x = 381,281,610,825.79
  5. Step 5: Solve for x
    x = 381,281,610,825.79/710,925.96
  6. Step 6: Final answer
    x = 536,316.91

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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.