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Finding the Fourth Proportional to 30,602,603.40, 42,900,331.80 and 30,602,603.40

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Solution

The fourth proportional to 30,602,603.40, 42,900,331.80 and 30,602,603.40 is: 42,900,331.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,602,603.40 : 42,900,331.80 = 30,602,603.40 : x
  2. Step 2: Convert to fraction form
    30,602,603.40/42,900,331.80 = 30,602,603.40/x
  3. Step 3: Cross multiply
    30,602,603.40x = 42,900,331.80 × 30,602,603.40
  4. Step 4: Simplify right side
    30,602,603.40x = 1,312,861,839,803,808
  5. Step 5: Solve for x
    x = 1,312,861,839,803,808/30,602,603.40
  6. Step 6: Final answer
    x = 42,900,331.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.