Home / 989,448.48-1,484,051.76-421,057.98

Finding the Fourth Proportional to 989,448.48, 1,484,051.76 and 421,057.98

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Solution

The fourth proportional to 989,448.48, 1,484,051.76 and 421,057.98 is: 631,535.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,448.48 : 1,484,051.76 = 421,057.98 : x
  2. Step 2: Convert to fraction form
    989,448.48/1,484,051.76 = 421,057.98/x
  3. Step 3: Cross multiply
    989,448.48x = 1,484,051.76 × 421,057.98
  4. Step 4: Simplify right side
    989,448.48x = 624,871,836,281.05
  5. Step 5: Solve for x
    x = 624,871,836,281.05/989,448.48
  6. Step 6: Final answer
    x = 631,535.50

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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.