Home / 745,032.60-1,118,010.60-390,301.20

Finding the Fourth Proportional to 745,032.60, 1,118,010.60 and 390,301.20

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Solution

The fourth proportional to 745,032.60, 1,118,010.60 and 390,301.20 is: 585,693.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    745,032.60 : 1,118,010.60 = 390,301.20 : x
  2. Step 2: Convert to fraction form
    745,032.60/1,118,010.60 = 390,301.20/x
  3. Step 3: Cross multiply
    745,032.60x = 1,118,010.60 × 390,301.20
  4. Step 4: Simplify right side
    745,032.60x = 436,360,878,792.72
  5. Step 5: Solve for x
    x = 436,360,878,792.72/745,032.60
  6. Step 6: Final answer
    x = 585,693.67

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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.