Home / 487,035.32-671,673.51-305,764.16

Finding the Fourth Proportional to 487,035.32, 671,673.51 and 305,764.16

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Solution

The fourth proportional to 487,035.32, 671,673.51 and 305,764.16 is: 421,681.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,035.32 : 671,673.51 = 305,764.16 : x
  2. Step 2: Convert to fraction form
    487,035.32/671,673.51 = 305,764.16/x
  3. Step 3: Cross multiply
    487,035.32x = 671,673.51 × 305,764.16
  4. Step 4: Simplify right side
    487,035.32x = 205,373,683,221.03
  5. Step 5: Solve for x
    x = 205,373,683,221.03/487,035.32
  6. Step 6: Final answer
    x = 421,681.30

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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.