Home / 391,140,591,151.60-586,710,886,727.40-212,617,229,820.40

Finding the Fourth Proportional to 391,140,591,151.60, 586,710,886,727.40 and 212,617,229,820.40

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Solution

The fourth proportional to 391,140,591,151.60, 586,710,886,727.40 and 212,617,229,820.40 is: 318,925,844,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,140,591,151.60 : 586,710,886,727.40 = 212,617,229,820.40 : x
  2. Step 2: Convert to fraction form
    391,140,591,151.60/586,710,886,727.40 = 212,617,229,820.40/x
  3. Step 3: Cross multiply
    391,140,591,151.60x = 586,710,886,727.40 × 212,617,229,820.40
  4. Step 4: Simplify right side
    391,140,591,151.60x = 124,744,843,441,450,281,598,976
  5. Step 5: Solve for x
    x = 124,744,843,441,450,281,598,976/391,140,591,151.60
  6. Step 6: Final answer
    x = 318,925,844,730.60

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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.