Home / 989,287.51-1,484,038.80-315,210.37

Finding the Fourth Proportional to 989,287.51, 1,484,038.80 and 315,210.37

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Solution

The fourth proportional to 989,287.51, 1,484,038.80 and 315,210.37 is: 472,849.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,287.51 : 1,484,038.80 = 315,210.37 : x
  2. Step 2: Convert to fraction form
    989,287.51/1,484,038.80 = 315,210.37/x
  3. Step 3: Cross multiply
    989,287.51x = 1,484,038.80 × 315,210.37
  4. Step 4: Simplify right side
    989,287.51x = 467,784,419,242.36
  5. Step 5: Solve for x
    x = 467,784,419,242.36/989,287.51
  6. Step 6: Final answer
    x = 472,849.82

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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.