Home / 390,706,880.40-586,144,301.40-118,105,203.60

Finding the Fourth Proportional to 390,706,880.40, 586,144,301.40 and 118,105,203.60

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Solution

The fourth proportional to 390,706,880.40, 586,144,301.40 and 118,105,203.60 is: 177,183,191.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,706,880.40 : 586,144,301.40 = 118,105,203.60 : x
  2. Step 2: Convert to fraction form
    390,706,880.40/586,144,301.40 = 118,105,203.60/x
  3. Step 3: Cross multiply
    390,706,880.40x = 586,144,301.40 × 118,105,203.60
  4. Step 4: Simplify right side
    390,706,880.40x = 69,226,692,055,826,760
  5. Step 5: Solve for x
    x = 69,226,692,055,826,760/390,706,880.40
  6. Step 6: Final answer
    x = 177,183,191.62

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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.