Home / 390,989,133.60-586,334,401.20-118,269,261.60

Finding the Fourth Proportional to 390,989,133.60, 586,334,401.20 and 118,269,261.60

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Solution

The fourth proportional to 390,989,133.60, 586,334,401.20 and 118,269,261.60 is: 177,358,731.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,989,133.60 : 586,334,401.20 = 118,269,261.60 : x
  2. Step 2: Convert to fraction form
    390,989,133.60/586,334,401.20 = 118,269,261.60/x
  3. Step 3: Cross multiply
    390,989,133.60x = 586,334,401.20 × 118,269,261.60
  4. Step 4: Simplify right side
    390,989,133.60x = 69,345,336,680,602,160
  5. Step 5: Solve for x
    x = 69,345,336,680,602,160/390,989,133.60
  6. Step 6: Final answer
    x = 177,358,731.28

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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.