Home / 390,103,485.60-585,155,228.40-354,390,650.40

Finding the Fourth Proportional to 390,103,485.60, 585,155,228.40 and 354,390,650.40

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Solution

The fourth proportional to 390,103,485.60, 585,155,228.40 and 354,390,650.40 is: 531,585,975.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,103,485.60 : 585,155,228.40 = 354,390,650.40 : x
  2. Step 2: Convert to fraction form
    390,103,485.60/585,155,228.40 = 354,390,650.40/x
  3. Step 3: Cross multiply
    390,103,485.60x = 585,155,228.40 × 354,390,650.40
  4. Step 4: Simplify right side
    390,103,485.60x = 207,373,541,977,636,544
  5. Step 5: Solve for x
    x = 207,373,541,977,636,544/390,103,485.60
  6. Step 6: Final answer
    x = 531,585,975.60

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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.