Home / 691,653.40-1,037,480.10-424,547.80

Finding the Fourth Proportional to 691,653.40, 1,037,480.10 and 424,547.80

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Solution

The fourth proportional to 691,653.40, 1,037,480.10 and 424,547.80 is: 636,821.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,653.40 : 1,037,480.10 = 424,547.80 : x
  2. Step 2: Convert to fraction form
    691,653.40/1,037,480.10 = 424,547.80/x
  3. Step 3: Cross multiply
    691,653.40x = 1,037,480.10 × 424,547.80
  4. Step 4: Simplify right side
    691,653.40x = 440,459,893,998.78
  5. Step 5: Solve for x
    x = 440,459,893,998.78/691,653.40
  6. Step 6: Final answer
    x = 636,821.70

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Double scale
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Similar ratio
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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.