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Finding the Fourth Proportional to 899,993.60, 1,350,508.80 and 339,430.40

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Solution

The fourth proportional to 899,993.60, 1,350,508.80 and 339,430.40 is: 509,341.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,993.60 : 1,350,508.80 = 339,430.40 : x
  2. Step 2: Convert to fraction form
    899,993.60/1,350,508.80 = 339,430.40/x
  3. Step 3: Cross multiply
    899,993.60x = 1,350,508.80 × 339,430.40
  4. Step 4: Simplify right side
    899,993.60x = 458,403,742,187.52
  5. Step 5: Solve for x
    x = 458,403,742,187.52/899,993.60
  6. Step 6: Final answer
    x = 509,341.11

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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.