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Finding the Fourth Proportional to 610,413.80, 915,620.70 and 278,637.80

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Solution

The fourth proportional to 610,413.80, 915,620.70 and 278,637.80 is: 417,956.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,413.80 : 915,620.70 = 278,637.80 : x
  2. Step 2: Convert to fraction form
    610,413.80/915,620.70 = 278,637.80/x
  3. Step 3: Cross multiply
    610,413.80x = 915,620.70 × 278,637.80
  4. Step 4: Simplify right side
    610,413.80x = 255,126,537,482.46
  5. Step 5: Solve for x
    x = 255,126,537,482.46/610,413.80
  6. Step 6: Final answer
    x = 417,956.70

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Similar ratio
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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.