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Finding the Fourth Proportional to 779,608.80, 1,169,413.20 and 425,314.80

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Solution

The fourth proportional to 779,608.80, 1,169,413.20 and 425,314.80 is: 637,972.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,608.80 : 1,169,413.20 = 425,314.80 : x
  2. Step 2: Convert to fraction form
    779,608.80/1,169,413.20 = 425,314.80/x
  3. Step 3: Cross multiply
    779,608.80x = 1,169,413.20 × 425,314.80
  4. Step 4: Simplify right side
    779,608.80x = 497,368,741,275.36
  5. Step 5: Solve for x
    x = 497,368,741,275.36/779,608.80
  6. Step 6: Final answer
    x = 637,972.20

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1.5x scale

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.