Home / 805,853,327.20-1,208,779,990.80-260,649,973.60

Finding the Fourth Proportional to 805,853,327.20, 1,208,779,990.80 and 260,649,973.60

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Solution

The fourth proportional to 805,853,327.20, 1,208,779,990.80 and 260,649,973.60 is: 390,974,960.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    805,853,327.20 : 1,208,779,990.80 = 260,649,973.60 : x
  2. Step 2: Convert to fraction form
    805,853,327.20/1,208,779,990.80 = 260,649,973.60/x
  3. Step 3: Cross multiply
    805,853,327.20x = 1,208,779,990.80 × 260,649,973.60
  4. Step 4: Simplify right side
    805,853,327.20x = 315,068,472,690,228,224
  5. Step 5: Solve for x
    x = 315,068,472,690,228,224/805,853,327.20
  6. Step 6: Final answer
    x = 390,974,960.40

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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.