Home / 545,915,599.20-818,873,398.80-390,947,403.60

Finding the Fourth Proportional to 545,915,599.20, 818,873,398.80 and 390,947,403.60

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Solution

The fourth proportional to 545,915,599.20, 818,873,398.80 and 390,947,403.60 is: 586,421,105.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,915,599.20 : 818,873,398.80 = 390,947,403.60 : x
  2. Step 2: Convert to fraction form
    545,915,599.20/818,873,398.80 = 390,947,403.60/x
  3. Step 3: Cross multiply
    545,915,599.20x = 818,873,398.80 × 390,947,403.60
  4. Step 4: Simplify right side
    545,915,599.20x = 320,136,429,137,967,360
  5. Step 5: Solve for x
    x = 320,136,429,137,967,360/545,915,599.20
  6. Step 6: Final answer
    x = 586,421,105.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.