Home / 513,847,024.92-709,107,106.02-278,897,684.64

Finding the Fourth Proportional to 513,847,024.92, 709,107,106.02 and 278,897,684.64

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Solution

The fourth proportional to 513,847,024.92, 709,107,106.02 and 278,897,684.64 is: 384,877,834.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,847,024.92 : 709,107,106.02 = 278,897,684.64 : x
  2. Step 2: Convert to fraction form
    513,847,024.92/709,107,106.02 = 278,897,684.64/x
  3. Step 3: Cross multiply
    513,847,024.92x = 709,107,106.02 × 278,897,684.64
  4. Step 4: Simplify right side
    513,847,024.92x = 197,768,330,030,748,992
  5. Step 5: Solve for x
    x = 197,768,330,030,748,992/513,847,024.92
  6. Step 6: Final answer
    x = 384,877,834.14

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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.