Home / 1,438,678.69-1,985,345.93-785,283.01

Finding the Fourth Proportional to 1,438,678.69, 1,985,345.93 and 785,283.01

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Solution

The fourth proportional to 1,438,678.69, 1,985,345.93 and 785,283.01 is: 1,083,673.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,678.69 : 1,985,345.93 = 785,283.01 : x
  2. Step 2: Convert to fraction form
    1,438,678.69/1,985,345.93 = 785,283.01/x
  3. Step 3: Cross multiply
    1,438,678.69x = 1,985,345.93 × 785,283.01
  4. Step 4: Simplify right side
    1,438,678.69x = 1,559,058,423,875.23
  5. Step 5: Solve for x
    x = 1,559,058,423,875.23/1,438,678.69
  6. Step 6: Final answer
    x = 1,083,673.81

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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.