Home / 776,669.60-1,072,330.70-486,397.59

Finding the Fourth Proportional to 776,669.60, 1,072,330.70 and 486,397.59

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Solution

The fourth proportional to 776,669.60, 1,072,330.70 and 486,397.59 is: 671,558.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    776,669.60 : 1,072,330.70 = 486,397.59 : x
  2. Step 2: Convert to fraction form
    776,669.60/1,072,330.70 = 486,397.59/x
  3. Step 3: Cross multiply
    776,669.60x = 1,072,330.70 × 486,397.59
  4. Step 4: Simplify right side
    776,669.60x = 521,579,065,731.03
  5. Step 5: Solve for x
    x = 521,579,065,731.03/776,669.60
  6. Step 6: Final answer
    x = 671,558.50

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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.