Home / 686,547.42-1,028,480.43-326,205.45

Finding the Fourth Proportional to 686,547.42, 1,028,480.43 and 326,205.45

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Solution

The fourth proportional to 686,547.42, 1,028,480.43 and 326,205.45 is: 488,671.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,547.42 : 1,028,480.43 = 326,205.45 : x
  2. Step 2: Convert to fraction form
    686,547.42/1,028,480.43 = 326,205.45/x
  3. Step 3: Cross multiply
    686,547.42x = 1,028,480.43 × 326,205.45
  4. Step 4: Simplify right side
    686,547.42x = 335,495,921,484.34
  5. Step 5: Solve for x
    x = 335,495,921,484.34/686,547.42
  6. Step 6: Final answer
    x = 488,671.16

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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.