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Finding the Fourth Proportional to 641,342,962.60, 962,014,443.90 and 549,509,957.80

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Solution

The fourth proportional to 641,342,962.60, 962,014,443.90 and 549,509,957.80 is: 824,264,936.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,342,962.60 : 962,014,443.90 = 549,509,957.80 : x
  2. Step 2: Convert to fraction form
    641,342,962.60/962,014,443.90 = 549,509,957.80/x
  3. Step 3: Cross multiply
    641,342,962.60x = 962,014,443.90 × 549,509,957.80
  4. Step 4: Simplify right side
    641,342,962.60x = 528,636,516,470,479,424
  5. Step 5: Solve for x
    x = 528,636,516,470,479,424/641,342,962.60
  6. Step 6: Final answer
    x = 824,264,936.70

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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.