Home / 680,013,800.80-1,020,020,701.20-407,916,008.80

Finding the Fourth Proportional to 680,013,800.80, 1,020,020,701.20 and 407,916,008.80

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Solution

The fourth proportional to 680,013,800.80, 1,020,020,701.20 and 407,916,008.80 is: 611,874,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,013,800.80 : 1,020,020,701.20 = 407,916,008.80 : x
  2. Step 2: Convert to fraction form
    680,013,800.80/1,020,020,701.20 = 407,916,008.80/x
  3. Step 3: Cross multiply
    680,013,800.80x = 1,020,020,701.20 × 407,916,008.80
  4. Step 4: Simplify right side
    680,013,800.80x = 416,082,773,326,881,408
  5. Step 5: Solve for x
    x = 416,082,773,326,881,408/680,013,800.80
  6. Step 6: Final answer
    x = 611,874,013.20

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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.