Home / 393,012,138.90-589,518,208.35-354,748,386.90

Finding the Fourth Proportional to 393,012,138.90, 589,518,208.35 and 354,748,386.90

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Solution

The fourth proportional to 393,012,138.90, 589,518,208.35 and 354,748,386.90 is: 532,122,580.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,012,138.90 : 589,518,208.35 = 354,748,386.90 : x
  2. Step 2: Convert to fraction form
    393,012,138.90/589,518,208.35 = 354,748,386.90/x
  3. Step 3: Cross multiply
    393,012,138.90x = 589,518,208.35 × 354,748,386.90
  4. Step 4: Simplify right side
    393,012,138.90x = 209,130,633,460,340,608
  5. Step 5: Solve for x
    x = 209,130,633,460,340,608/393,012,138.90
  6. Step 6: Final answer
    x = 532,122,580.35

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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.