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Finding the Fourth Proportional to 1,080,159,864.73, 1,490,860,413.65 and 656,683,542.65

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Solution

The fourth proportional to 1,080,159,864.73, 1,490,860,413.65 and 656,683,542.65 is: 906,369,075.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,159,864.73 : 1,490,860,413.65 = 656,683,542.65 : x
  2. Step 2: Convert to fraction form
    1,080,159,864.73/1,490,860,413.65 = 656,683,542.65/x
  3. Step 3: Cross multiply
    1,080,159,864.73x = 1,490,860,413.65 × 656,683,542.65
  4. Step 4: Simplify right side
    1,080,159,864.73x = 979,023,498,032,326,400
  5. Step 5: Solve for x
    x = 979,023,498,032,326,400/1,080,159,864.73
  6. Step 6: Final answer
    x = 906,369,075.54

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.