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Finding the Fourth Proportional to 860,363,938.65, 1,290,543,939.66 and 368,758,443.81

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Solution

The fourth proportional to 860,363,938.65, 1,290,543,939.66 and 368,758,443.81 is: 553,136,822.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,363,938.65 : 1,290,543,939.66 = 368,758,443.81 : x
  2. Step 2: Convert to fraction form
    860,363,938.65/1,290,543,939.66 = 368,758,443.81/x
  3. Step 3: Cross multiply
    860,363,938.65x = 1,290,543,939.66 × 368,758,443.81
  4. Step 4: Simplify right side
    860,363,938.65x = 475,898,974,857,448,192
  5. Step 5: Solve for x
    x = 475,898,974,857,448,192/860,363,938.65
  6. Step 6: Final answer
    x = 553,136,822.08

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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.