Home / 813,132,023.60-1,219,698,035.40-690,688,017.20

Finding the Fourth Proportional to 813,132,023.60, 1,219,698,035.40 and 690,688,017.20

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Solution

The fourth proportional to 813,132,023.60, 1,219,698,035.40 and 690,688,017.20 is: 1,036,032,025.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,132,023.60 : 1,219,698,035.40 = 690,688,017.20 : x
  2. Step 2: Convert to fraction form
    813,132,023.60/1,219,698,035.40 = 690,688,017.20/x
  3. Step 3: Cross multiply
    813,132,023.60x = 1,219,698,035.40 × 690,688,017.20
  4. Step 4: Simplify right side
    813,132,023.60x = 842,430,817,653,161,472
  5. Step 5: Solve for x
    x = 842,430,817,653,161,472/813,132,023.60
  6. Step 6: Final answer
    x = 1,036,032,025.80

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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.