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Finding the Fourth Proportional to 909,547, 1,255,157.82 and 501,686.92

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Solution

The fourth proportional to 909,547, 1,255,157.82 and 501,686.92 is: 692,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,547 : 1,255,157.82 = 501,686.92 : x
  2. Step 2: Convert to fraction form
    909,547/1,255,157.82 = 501,686.92/x
  3. Step 3: Cross multiply
    909,547x = 1,255,157.82 × 501,686.92
  4. Step 4: Simplify right side
    909,547x = 629,696,260,829.71
  5. Step 5: Solve for x
    x = 629,696,260,829.71/909,547
  6. Step 6: Final answer
    x = 692,318.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.