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Finding the Fourth Proportional to 620,733.68, 856,613.40 and 352,461.68

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Solution

The fourth proportional to 620,733.68, 856,613.40 and 352,461.68 is: 486,397.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,733.68 : 856,613.40 = 352,461.68 : x
  2. Step 2: Convert to fraction form
    620,733.68/856,613.40 = 352,461.68/x
  3. Step 3: Cross multiply
    620,733.68x = 856,613.40 × 352,461.68
  4. Step 4: Simplify right side
    620,733.68x = 301,923,398,074.51
  5. Step 5: Solve for x
    x = 301,923,398,074.51/620,733.68
  6. Step 6: Final answer
    x = 486,397.64

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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.