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Finding the Fourth Proportional to 651,670,815.80, 977,506,223.70 and 220,849,311.80

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Solution

The fourth proportional to 651,670,815.80, 977,506,223.70 and 220,849,311.80 is: 331,273,967.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,670,815.80 : 977,506,223.70 = 220,849,311.80 : x
  2. Step 2: Convert to fraction form
    651,670,815.80/977,506,223.70 = 220,849,311.80/x
  3. Step 3: Cross multiply
    651,670,815.80x = 977,506,223.70 × 220,849,311.80
  4. Step 4: Simplify right side
    651,670,815.80x = 215,881,576,784,361,856
  5. Step 5: Solve for x
    x = 215,881,576,784,361,856/651,670,815.80
  6. Step 6: Final answer
    x = 331,273,967.70

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Double scale
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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.