Home / 838,752,746.40-1,257,905,170.80-256,485,866.40

Finding the Fourth Proportional to 838,752,746.40, 1,257,905,170.80 and 256,485,866.40

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Solution

The fourth proportional to 838,752,746.40, 1,257,905,170.80 and 256,485,866.40 is: 384,660,317.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,752,746.40 : 1,257,905,170.80 = 256,485,866.40 : x
  2. Step 2: Convert to fraction form
    838,752,746.40/1,257,905,170.80 = 256,485,866.40/x
  3. Step 3: Cross multiply
    838,752,746.40x = 1,257,905,170.80 × 256,485,866.40
  4. Step 4: Simplify right side
    838,752,746.40x = 322,634,897,581,677,952
  5. Step 5: Solve for x
    x = 322,634,897,581,677,952/838,752,746.40
  6. Step 6: Final answer
    x = 384,660,317.32

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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.