Home / 690,733.76-1,036,103.28-353,590.40

Finding the Fourth Proportional to 690,733.76, 1,036,103.28 and 353,590.40

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Solution

The fourth proportional to 690,733.76, 1,036,103.28 and 353,590.40 is: 530,386.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,733.76 : 1,036,103.28 = 353,590.40 : x
  2. Step 2: Convert to fraction form
    690,733.76/1,036,103.28 = 353,590.40/x
  3. Step 3: Cross multiply
    690,733.76x = 1,036,103.28 × 353,590.40
  4. Step 4: Simplify right side
    690,733.76x = 366,356,173,216.51
  5. Step 5: Solve for x
    x = 366,356,173,216.51/690,733.76
  6. Step 6: Final answer
    x = 530,386.95

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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.