Home / 499,688,730,119.91-689,570,447,565.39-285,832,620,191.90

Finding the Fourth Proportional to 499,688,730,119.91, 689,570,447,565.39 and 285,832,620,191.90

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Solution

The fourth proportional to 499,688,730,119.91, 689,570,447,565.39 and 285,832,620,191.90 is: 394,449,015,864.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,688,730,119.91 : 689,570,447,565.39 = 285,832,620,191.90 : x
  2. Step 2: Convert to fraction form
    499,688,730,119.91/689,570,447,565.39 = 285,832,620,191.90/x
  3. Step 3: Cross multiply
    499,688,730,119.91x = 689,570,447,565.39 × 285,832,620,191.90
  4. Step 4: Simplify right side
    499,688,730,119.91x = 197,101,727,834,516,620,312,576
  5. Step 5: Solve for x
    x = 197,101,727,834,516,620,312,576/499,688,730,119.91
  6. Step 6: Final answer
    x = 394,449,015,864.77

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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.