Home / 719,240,979.84-992,552,553.44-389,216,118.72

Finding the Fourth Proportional to 719,240,979.84, 992,552,553.44 and 389,216,118.72

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Solution

The fourth proportional to 719,240,979.84, 992,552,553.44 and 389,216,118.72 is: 537,118,244.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,240,979.84 : 992,552,553.44 = 389,216,118.72 : x
  2. Step 2: Convert to fraction form
    719,240,979.84/992,552,553.44 = 389,216,118.72/x
  3. Step 3: Cross multiply
    719,240,979.84x = 992,552,553.44 × 389,216,118.72
  4. Step 4: Simplify right side
    719,240,979.84x = 386,317,452,475,542,208
  5. Step 5: Solve for x
    x = 386,317,452,475,542,208/719,240,979.84
  6. Step 6: Final answer
    x = 537,118,244.52

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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.