Home / 909,903.81-1,363,748.85-643,741.05

Finding the Fourth Proportional to 909,903.81, 1,363,748.85 and 643,741.05

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Solution

The fourth proportional to 909,903.81, 1,363,748.85 and 643,741.05 is: 964,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,903.81 : 1,363,748.85 = 643,741.05 : x
  2. Step 2: Convert to fraction form
    909,903.81/1,363,748.85 = 643,741.05/x
  3. Step 3: Cross multiply
    909,903.81x = 1,363,748.85 × 643,741.05
  4. Step 4: Simplify right side
    909,903.81x = 877,901,113,416.59
  5. Step 5: Solve for x
    x = 877,901,113,416.59/909,903.81
  6. Step 6: Final answer
    x = 964,828.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.