Home / 1,020,219.40-1,530,386.70-310,270.60

Finding the Fourth Proportional to 1,020,219.40, 1,530,386.70 and 310,270.60

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Solution

The fourth proportional to 1,020,219.40, 1,530,386.70 and 310,270.60 is: 465,423.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020,219.40 : 1,530,386.70 = 310,270.60 : x
  2. Step 2: Convert to fraction form
    1,020,219.40/1,530,386.70 = 310,270.60/x
  3. Step 3: Cross multiply
    1,020,219.40x = 1,530,386.70 × 310,270.60
  4. Step 4: Simplify right side
    1,020,219.40x = 474,833,999,641.02
  5. Step 5: Solve for x
    x = 474,833,999,641.02/1,020,219.40
  6. Step 6: Final answer
    x = 465,423.42

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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.