Home / 390,831,281.15-586,265,775.89-128,510,024.01

Finding the Fourth Proportional to 390,831,281.15, 586,265,775.89 and 128,510,024.01

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Solution

The fourth proportional to 390,831,281.15, 586,265,775.89 and 128,510,024.01 is: 192,771,235.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,831,281.15 : 586,265,775.89 = 128,510,024.01 : x
  2. Step 2: Convert to fraction form
    390,831,281.15/586,265,775.89 = 128,510,024.01/x
  3. Step 3: Cross multiply
    390,831,281.15x = 586,265,775.89 × 128,510,024.01
  4. Step 4: Simplify right side
    390,831,281.15x = 75,341,028,933,024,128
  5. Step 5: Solve for x
    x = 75,341,028,933,024,128/390,831,281.15
  6. Step 6: Final answer
    x = 192,771,235.49

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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.