Home / 990,457.34-1,485,445.70-457,465.46

Finding the Fourth Proportional to 990,457.34, 1,485,445.70 and 457,465.46

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Solution

The fourth proportional to 990,457.34, 1,485,445.70 and 457,465.46 is: 686,087.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,457.34 : 1,485,445.70 = 457,465.46 : x
  2. Step 2: Convert to fraction form
    990,457.34/1,485,445.70 = 457,465.46/x
  3. Step 3: Cross multiply
    990,457.34x = 1,485,445.70 × 457,465.46
  4. Step 4: Simplify right side
    990,457.34x = 679,540,094,171.96
  5. Step 5: Solve for x
    x = 679,540,094,171.96/990,457.34
  6. Step 6: Final answer
    x = 686,087.19

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1.5x scale

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.