Home / 670,038.60-1,005,057.90-638,934.60

Finding the Fourth Proportional to 670,038.60, 1,005,057.90 and 638,934.60

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Solution

The fourth proportional to 670,038.60, 1,005,057.90 and 638,934.60 is: 958,401.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,038.60 : 1,005,057.90 = 638,934.60 : x
  2. Step 2: Convert to fraction form
    670,038.60/1,005,057.90 = 638,934.60/x
  3. Step 3: Cross multiply
    670,038.60x = 1,005,057.90 × 638,934.60
  4. Step 4: Simplify right side
    670,038.60x = 642,166,267,313.34
  5. Step 5: Solve for x
    x = 642,166,267,313.34/670,038.60
  6. Step 6: Final answer
    x = 958,401.90

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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.