Home / 875,123.81-1,312,685.73-210,275.81

Finding the Fourth Proportional to 875,123.81, 1,312,685.73 and 210,275.81

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Solution

The fourth proportional to 875,123.81, 1,312,685.73 and 210,275.81 is: 315,413.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,123.81 : 1,312,685.73 = 210,275.81 : x
  2. Step 2: Convert to fraction form
    875,123.81/1,312,685.73 = 210,275.81/x
  3. Step 3: Cross multiply
    875,123.81x = 1,312,685.73 × 210,275.81
  4. Step 4: Simplify right side
    875,123.81x = 276,026,058,432.91
  5. Step 5: Solve for x
    x = 276,026,058,432.91/875,123.81
  6. Step 6: Final answer
    x = 315,413.72

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Double scale
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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.