Home / 426,096,021.60-639,144,032.40-290,047,125.60

Finding the Fourth Proportional to 426,096,021.60, 639,144,032.40 and 290,047,125.60

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Solution

The fourth proportional to 426,096,021.60, 639,144,032.40 and 290,047,125.60 is: 435,070,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,096,021.60 : 639,144,032.40 = 290,047,125.60 : x
  2. Step 2: Convert to fraction form
    426,096,021.60/639,144,032.40 = 290,047,125.60/x
  3. Step 3: Cross multiply
    426,096,021.60x = 639,144,032.40 × 290,047,125.60
  4. Step 4: Simplify right side
    426,096,021.60x = 185,381,889,442,013,280
  5. Step 5: Solve for x
    x = 185,381,889,442,013,280/426,096,021.60
  6. Step 6: Final answer
    x = 435,070,688.40

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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.