Home / 688,484.15-1,032,369.78-309,078.23

Finding the Fourth Proportional to 688,484.15, 1,032,369.78 and 309,078.23

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Solution

The fourth proportional to 688,484.15, 1,032,369.78 and 309,078.23 is: 463,457.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,484.15 : 1,032,369.78 = 309,078.23 : x
  2. Step 2: Convert to fraction form
    688,484.15/1,032,369.78 = 309,078.23/x
  3. Step 3: Cross multiply
    688,484.15x = 1,032,369.78 × 309,078.23
  4. Step 4: Simplify right side
    688,484.15x = 319,083,024,307.89
  5. Step 5: Solve for x
    x = 319,083,024,307.89/688,484.15
  6. Step 6: Final answer
    x = 463,457.33

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Double scale
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1.5x scale

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.