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Finding the Fourth Proportional to 664,335, 916,831.58 and 377,947.35

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Solution

The fourth proportional to 664,335, 916,831.58 and 377,947.35 is: 521,595.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,335 : 916,831.58 = 377,947.35 : x
  2. Step 2: Convert to fraction form
    664,335/916,831.58 = 377,947.35/x
  3. Step 3: Cross multiply
    664,335x = 916,831.58 × 377,947.35
  4. Step 4: Simplify right side
    664,335x = 346,514,064,167.58
  5. Step 5: Solve for x
    x = 346,514,064,167.58/664,335
  6. Step 6: Final answer
    x = 521,595.38

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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.