Home / 909,688.80-1,361,908.80-815,210.40

Finding the Fourth Proportional to 909,688.80, 1,361,908.80 and 815,210.40

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Solution

The fourth proportional to 909,688.80, 1,361,908.80 and 815,210.40 is: 1,220,463.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,688.80 : 1,361,908.80 = 815,210.40 : x
  2. Step 2: Convert to fraction form
    909,688.80/1,361,908.80 = 815,210.40/x
  3. Step 3: Cross multiply
    909,688.80x = 1,361,908.80 × 815,210.40
  4. Step 4: Simplify right side
    909,688.80x = 1,110,242,217,611.52
  5. Step 5: Solve for x
    x = 1,110,242,217,611.52/909,688.80
  6. Step 6: Final answer
    x = 1,220,463.76

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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.