Home / 1,021,564.86-1,408,510.35-638,927.34

Finding the Fourth Proportional to 1,021,564.86, 1,408,510.35 and 638,927.34

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Solution

The fourth proportional to 1,021,564.86, 1,408,510.35 and 638,927.34 is: 880,938.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,564.86 : 1,408,510.35 = 638,927.34 : x
  2. Step 2: Convert to fraction form
    1,021,564.86/1,408,510.35 = 638,927.34/x
  3. Step 3: Cross multiply
    1,021,564.86x = 1,408,510.35 × 638,927.34
  4. Step 4: Simplify right side
    1,021,564.86x = 899,935,771,287.97
  5. Step 5: Solve for x
    x = 899,935,771,287.97/1,021,564.86
  6. Step 6: Final answer
    x = 880,938.46

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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.