Home / 679,307.10-1,018,701.45-205,835.10

Finding the Fourth Proportional to 679,307.10, 1,018,701.45 and 205,835.10

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Solution

The fourth proportional to 679,307.10, 1,018,701.45 and 205,835.10 is: 308,674.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,307.10 : 1,018,701.45 = 205,835.10 : x
  2. Step 2: Convert to fraction form
    679,307.10/1,018,701.45 = 205,835.10/x
  3. Step 3: Cross multiply
    679,307.10x = 1,018,701.45 × 205,835.10
  4. Step 4: Simplify right side
    679,307.10x = 209,684,514,830.90
  5. Step 5: Solve for x
    x = 209,684,514,830.90/679,307.10
  6. Step 6: Final answer
    x = 308,674.11

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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.