Home / 838,632,582.40-1,257,948,873.60-430,485,894.40

Finding the Fourth Proportional to 838,632,582.40, 1,257,948,873.60 and 430,485,894.40

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Solution

The fourth proportional to 838,632,582.40, 1,257,948,873.60 and 430,485,894.40 is: 645,728,841.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,632,582.40 : 1,257,948,873.60 = 430,485,894.40 : x
  2. Step 2: Convert to fraction form
    838,632,582.40/1,257,948,873.60 = 430,485,894.40/x
  3. Step 3: Cross multiply
    838,632,582.40x = 1,257,948,873.60 × 430,485,894.40
  4. Step 4: Simplify right side
    838,632,582.40x = 541,529,245,961,168,448
  5. Step 5: Solve for x
    x = 541,529,245,961,168,448/838,632,582.40
  6. Step 6: Final answer
    x = 645,728,841.60

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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.