Home / 648,931.21-895,543.12-358,561.48

Finding the Fourth Proportional to 648,931.21, 895,543.12 and 358,561.48

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Solution

The fourth proportional to 648,931.21, 895,543.12 and 358,561.48 is: 494,824.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,931.21 : 895,543.12 = 358,561.48 : x
  2. Step 2: Convert to fraction form
    648,931.21/895,543.12 = 358,561.48/x
  3. Step 3: Cross multiply
    648,931.21x = 895,543.12 × 358,561.48
  4. Step 4: Simplify right side
    648,931.21x = 321,107,266,399.51
  5. Step 5: Solve for x
    x = 321,107,266,399.51/648,931.21
  6. Step 6: Final answer
    x = 494,824.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.