Home / 990,038.70-1,484,073.90-456,629.40

Finding the Fourth Proportional to 990,038.70, 1,484,073.90 and 456,629.40

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Solution

The fourth proportional to 990,038.70, 1,484,073.90 and 456,629.40 is: 684,490.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,038.70 : 1,484,073.90 = 456,629.40 : x
  2. Step 2: Convert to fraction form
    990,038.70/1,484,073.90 = 456,629.40/x
  3. Step 3: Cross multiply
    990,038.70x = 1,484,073.90 × 456,629.40
  4. Step 4: Simplify right side
    990,038.70x = 677,671,774,512.66
  5. Step 5: Solve for x
    x = 677,671,774,512.66/990,038.70
  6. Step 6: Final answer
    x = 684,490.19

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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.