Home / 1,390,271.50-2,085,632.25-430,501.53

Finding the Fourth Proportional to 1,390,271.50, 2,085,632.25 and 430,501.53

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Solution

The fourth proportional to 1,390,271.50, 2,085,632.25 and 430,501.53 is: 645,821.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,390,271.50 : 2,085,632.25 = 430,501.53 : x
  2. Step 2: Convert to fraction form
    1,390,271.50/2,085,632.25 = 430,501.53/x
  3. Step 3: Cross multiply
    1,390,271.50x = 2,085,632.25 × 430,501.53
  4. Step 4: Simplify right side
    1,390,271.50x = 897,867,874,642.34
  5. Step 5: Solve for x
    x = 897,867,874,642.34/1,390,271.50
  6. Step 6: Final answer
    x = 645,821.97

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Double scale
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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.