Home / 426,072,688.20-639,109,032.30-153,408,025.80

Finding the Fourth Proportional to 426,072,688.20, 639,109,032.30 and 153,408,025.80

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Solution

The fourth proportional to 426,072,688.20, 639,109,032.30 and 153,408,025.80 is: 230,112,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,072,688.20 : 639,109,032.30 = 153,408,025.80 : x
  2. Step 2: Convert to fraction form
    426,072,688.20/639,109,032.30 = 153,408,025.80/x
  3. Step 3: Cross multiply
    426,072,688.20x = 639,109,032.30 × 153,408,025.80
  4. Step 4: Simplify right side
    426,072,688.20x = 98,044,454,916,091,440
  5. Step 5: Solve for x
    x = 98,044,454,916,091,440/426,072,688.20
  6. Step 6: Final answer
    x = 230,112,038.70

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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.