Home / 719,248,510.28-992,562,911.70-389,223,658.28

Finding the Fourth Proportional to 719,248,510.28, 992,562,911.70 and 389,223,658.28

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Solution

The fourth proportional to 719,248,510.28, 992,562,911.70 and 389,223,658.28 is: 537,128,630.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,248,510.28 : 992,562,911.70 = 389,223,658.28 : x
  2. Step 2: Convert to fraction form
    719,248,510.28/992,562,911.70 = 389,223,658.28/x
  3. Step 3: Cross multiply
    719,248,510.28x = 992,562,911.70 × 389,223,658.28
  4. Step 4: Simplify right side
    719,248,510.28x = 386,328,967,564,922,624
  5. Step 5: Solve for x
    x = 386,328,967,564,922,624/719,248,510.28
  6. Step 6: Final answer
    x = 537,128,630.85

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Double scale
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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.