Home / 638,457.61-881,077.53-351,987.95

Finding the Fourth Proportional to 638,457.61, 881,077.53 and 351,987.95

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Solution

The fourth proportional to 638,457.61, 881,077.53 and 351,987.95 is: 485,746.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,457.61 : 881,077.53 = 351,987.95 : x
  2. Step 2: Convert to fraction form
    638,457.61/881,077.53 = 351,987.95/x
  3. Step 3: Cross multiply
    638,457.61x = 881,077.53 × 351,987.95
  4. Step 4: Simplify right side
    638,457.61x = 310,128,673,575.76
  5. Step 5: Solve for x
    x = 310,128,673,575.76/638,457.61
  6. Step 6: Final answer
    x = 485,746.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.