Home / 803,965,510.80-1,205,948,266.20-286,412,835.60

Finding the Fourth Proportional to 803,965,510.80, 1,205,948,266.20 and 286,412,835.60

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Solution

The fourth proportional to 803,965,510.80, 1,205,948,266.20 and 286,412,835.60 is: 429,619,253.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,965,510.80 : 1,205,948,266.20 = 286,412,835.60 : x
  2. Step 2: Convert to fraction form
    803,965,510.80/1,205,948,266.20 = 286,412,835.60/x
  3. Step 3: Cross multiply
    803,965,510.80x = 1,205,948,266.20 × 286,412,835.60
  4. Step 4: Simplify right side
    803,965,510.80x = 345,399,062,509,245,696
  5. Step 5: Solve for x
    x = 345,399,062,509,245,696/803,965,510.80
  6. Step 6: Final answer
    x = 429,619,253.40

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Double scale
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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.