Home / 1,030,412.61-1,421,038.58-643,263.77

Finding the Fourth Proportional to 1,030,412.61, 1,421,038.58 and 643,263.77

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Solution

The fourth proportional to 1,030,412.61, 1,421,038.58 and 643,263.77 is: 887,122.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,030,412.61 : 1,421,038.58 = 643,263.77 : x
  2. Step 2: Convert to fraction form
    1,030,412.61/1,421,038.58 = 643,263.77/x
  3. Step 3: Cross multiply
    1,030,412.61x = 1,421,038.58 × 643,263.77
  4. Step 4: Simplify right side
    1,030,412.61x = 914,102,634,622.52
  5. Step 5: Solve for x
    x = 914,102,634,622.52/1,030,412.61
  6. Step 6: Final answer
    x = 887,122.91

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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.