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Finding the Fourth Proportional to 710,424.77, 980,400.29 and 388,154.83

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Solution

The fourth proportional to 710,424.77, 980,400.29 and 388,154.83 is: 535,661.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,424.77 : 980,400.29 = 388,154.83 : x
  2. Step 2: Convert to fraction form
    710,424.77/980,400.29 = 388,154.83/x
  3. Step 3: Cross multiply
    710,424.77x = 980,400.29 × 388,154.83
  4. Step 4: Simplify right side
    710,424.77x = 380,547,107,896.90
  5. Step 5: Solve for x
    x = 380,547,107,896.90/710,424.77
  6. Step 6: Final answer
    x = 535,661.37

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1.5x scale

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.