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Finding the Fourth Proportional to 648,931.51, 895,543.53 and 358,561.78

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Solution

The fourth proportional to 648,931.51, 895,543.53 and 358,561.78 is: 494,825.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,931.51 : 895,543.53 = 358,561.78 : x
  2. Step 2: Convert to fraction form
    648,931.51/895,543.53 = 358,561.78/x
  3. Step 3: Cross multiply
    648,931.51x = 895,543.53 × 358,561.78
  4. Step 4: Simplify right side
    648,931.51x = 321,107,682,184.28
  5. Step 5: Solve for x
    x = 321,107,682,184.28/648,931.51
  6. Step 6: Final answer
    x = 494,825.23

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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.