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Finding the Fourth Proportional to 403,587.68, 557,017.44 and 307,913.60

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Solution

The fourth proportional to 403,587.68, 557,017.44 and 307,913.60 is: 424,971.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,587.68 : 557,017.44 = 307,913.60 : x
  2. Step 2: Convert to fraction form
    403,587.68/557,017.44 = 307,913.60/x
  3. Step 3: Cross multiply
    403,587.68x = 557,017.44 × 307,913.60
  4. Step 4: Simplify right side
    403,587.68x = 171,513,245,213.18
  5. Step 5: Solve for x
    x = 171,513,245,213.18/403,587.68
  6. Step 6: Final answer
    x = 424,971.46

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1.5x scale

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.